The Fiberglass pool is a fiberglass shell that is carried to your location. A hole is dug similarly to the vinyl inground pool and then the shell is lowered in to place. Fiberglass pools usually have a similar warranty to the vinyl inground pools and are also very popular with residential pool builders.

They generally cost 5000-10000 more for a similar sized pool then the vinyl inground. The greatest advantage is that they do not have a liner that needs to be replaced every decade. When selecting a fiberglass builder you should be sure he has great experience as a fiberglass pool can be easy to set wrong and have trouble with cracks later in life if done wrong.

Another very popular choice for inground swimming pools is that of Gunite (also sometimes called concrete) pools. Gunite pools are very popular for commercial settings or elaborate large residential pools. Gunite is generally significantly more expensive then that of vinyl or fiberglass inground pools.
Many people prefer gunite because of the idea that is a perminant concrete structure on the property. Although these days many fiberglass and vinyl pools have lifetime warrenties (which may mean 25-100 years and should be checked into before buying).

Vinyl Inground Swimming Pools are one of the most commonly built inground swimming pools for residential purposes. Vinyl Pools are not completely made of vinyl, rather they have an inside liner made of vinyl. The inside liners can be a variety of different patterns and allow for replacement if torn or damaged.
Liners generally last 7-10 years depending on the chemicals used and quality of liner material. The thicker the liner the more likely it is to last through wear and tear.